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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2022-03-09 23:13:45 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-03-11 01:09:29 +0100 |
| commit | e0ae713023a9d09d6e1b454bdc8e8c1dd32c586e (patch) | |
| tree | 20e9bb4b586ec66b5627d487283c9176600ae8e8 /drivers/net/ethernet/broadcom/genet | |
| parent | ice: Fix race condition during interface enslave (diff) | |
| download | linux-e0ae713023a9d09d6e1b454bdc8e8c1dd32c586e.tar.xz linux-e0ae713023a9d09d6e1b454bdc8e8c1dd32c586e.zip | |
xdp: xdp_mem_allocator can be NULL in trace_mem_connect().
Since the commit mentioned below __xdp_reg_mem_model() can return a NULL
pointer. This pointer is dereferenced in trace_mem_connect() which leads
to segfault.
The trace points (mem_connect + mem_disconnect) were put in place to
pair connect/disconnect using the IDs. The ID is only assigned if
__xdp_reg_mem_model() does not return NULL. That connect trace point is
of no use if there is no ID.
Skip that connect trace point if xdp_alloc is NULL.
[ Toke Høiland-Jørgensen delivered the reasoning for skipping the trace
point ]
Fixes: 4a48ef70b93b8 ("xdp: Allow registering memory model without rxq reference")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/YikmmXsffE+QajTB@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/broadcom/genet')
0 files changed, 0 insertions, 0 deletions